diff --git a/.gitea/workflows/checkPullRequest.yaml b/.gitea/workflows/checkPullRequest.yaml
new file mode 100644
index 0000000..43d3224
--- /dev/null
+++ b/.gitea/workflows/checkPullRequest.yaml
@@ -0,0 +1,18 @@
+name: check PR
+on:
+  pull_request:
+    types:[opened, reopened, edited]
+jobs:
+  check_render:
+      runs-on: ubuntu-latest
+      steps:
+        - name: Check out repository code
+          uses: actions/checkout@v4
+        - name: Download renderer
+          run: wget https://github.com/plantuml/plantuml/releases/download/v1.2024.5/plantuml-1.2024.5.jar
+        - name: Download java
+          run: wget https://github.com/adoptium/temurin21-binaries/releases/download/jdk-21.0.3%2B9/OpenJDK21U-jre_x64_linux_hotspot_21.0.3_9.tar.gz; tar -xvzf OpenJDK21U-jre_x64_linux_hotspot_21.0.3_9.tar.gz
+        - name: install graphviz
+          run: sudo add-apt-repository universe; sudo apt update; apt install graphviz -y
+        - name: render
+          run: ./jdk-21.0.3+9-jre/bin/java -jar plantuml-1.2024.5.jar polycule.puml
\ No newline at end of file
diff --git a/.gitea/workflows/render.yaml b/.gitea/workflows/render.yaml
index debd198..3800c77 100644
--- a/.gitea/workflows/render.yaml
+++ b/.gitea/workflows/render.yaml
@@ -1,5 +1,4 @@
-name: Gitea Actions Demo
-run-name: ${{ gitea.actor }} is testing out Gitea Actions 🚀
+name: Render diagram
 on:
   push:
     branches: